This article deals with the production of biogas by using organic wastes such as animal manure ,food wastes, sewage water and other agricultural wastes . Biogas is a mixture of gases, primarily consisting of methane, carbon dioxide and hydrogen sulphide, produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste and food waste. It is a renewable energy source. This article involves both the industrial and domestic production of biogas and its benefits ,uses and applications of biogas.